An abnormal curve of the lumbar spine is lordosis, also called sway back. An abnormal curve of the thoracic spine is kyphosis, also called hunchback. An abnormal curve from side-to-side is called scoliosis.
There are approximately 560,000,000,000 planets in outer space that scientists have discovered. In this solar system, there are eight planets. In this galaxy, there are likely between 50 billion and a trillion planets-or more. At this point, we can hardly guess.
Outer space is big. Really, really, really big. And thatâs why NASA has no plans at present to send a spacecraft to any of the 1,876 known planets (as of January 9, 2015) beyond our solar system. Alpha Centauri is the nearest star system to our sun at 4.3 light-years away.